【2017年整理】《表面技术》论文模板.docVIP

唑类缓蚀剂在铜表面的吸附机理 廉兵杰1，石泽民2，姜云瑛2，李春玲2，胡松青2 （1中海油常州涂料化工研究院有限公司，江苏 常州 213000；2中国石油大学（华东）理学院，山东 青岛 266580；） 目的 提高镁合金有机涂层的耐磨性能方法KH450硅烷改性SiO2粉体，充分分散于电泳漆中KH460硅烷预处理镁合金表面，并阴极电泳复合涂层。铅笔硬度、摩擦磨损、画圈附着力、NMP (N甲基吡咯烷酮) 试验和Machu试验分别评价阴极电泳涂层的硬度、耐磨性能、附着力、抗NMP溶胀性能和耐蚀性，并通过和对形貌进行。结果KH460预处理的前提下，添加SiO2粉体使硬度由4H上升为5H，同时也提高了涂层的耐蚀性，附着力1级抗NMP溶胀性能仍120 h。SiO2的涂层耐磨性较好，磨痕深度与涂层厚度比值分别为0.47和0.475，摩擦系数均低于0.4；SiO2的涂层耐磨性较差，磨痕深度与涂层厚度比值分别为0.665和0.673，摩擦系数均大于0.7。四种涂层磨损破坏的机制主要为疲劳破坏。结论 SiO2粉体的加入可以有效提高涂层的耐蚀性和铅笔硬度，同时不降低涂层的附着力和抗NMP溶胀性能SiO2，可有效提高阴极电泳涂层的耐磨性。 关键词：镁合金；阴极电泳涂层；SiO2；硅烷改性；耐磨性；磨损机制 中图分类号：TG147 文献标识码：A Effect of SiO2 on the Abrasion Resistance of E-coatings on Magnesium Alloy XXX1 ,XXX2 ,XXX 2 (1.Shanghai JiaoTong University, Shanghai 200240；2.University of Science and Technology Beijing，Beijing 100083) ABSTRACT: Objective To improve the abrasion resistance of organic coating on magnesium alloys. Methods in this paper, SiO2 powders were modified with KH450 silane and dispersed in electrophoretic paint. The surface of magnesium alloys was modified by KH460 silane，and then composite cathode electrophoresis coatings were prepared on it. pencil hardness test, friction and wear test, circle adhesion method，NMP (n methyl pyrrolidone) test and Machu test were taken to value the hardness, wear resistance, adhesion, anti-swelling properties of NMP and corrosion resistance of electrophoresis cathode coatings, respectively. Their morphologies were studied by SEM and Optical microscopy (OM). Results the pencil hardness of the coating，which was prepared on the magnesium alloy modified with KH460, was improved from 4H to 5H by adding SiO2 powders and the corrosion resistance also be increased too. And their adhesion and anti-swelling properties of NMP were still kept at 1 class and 120 h respectively. The original coating and the coating containing Nano SiO2 powder, both prepared on the magnesium alloy modified with KH460, had good wear resistance, and their ratios of wear scar depth and coating thickness were 0.